Stellaris PC Hardware Guide
Official requirements explained
The official minimum CPU for Stellaris is an Intel Core i3-530 or an AMD FX-6350. That is roughly FX-6300-era hardware, which by today's standards is a very old entry-level processor. The minimum GPU list covers the GeForce GTX 460, the Radeon HD 5870 with 1GB of VRAM, the Radeon RX Vega 11 and the Intel HD Graphics 4600. The HD 4600 is integrated graphics, so the minimum mainly means "able to draw the game at all." The minimum asks for 4GB of RAM and 10GB of storage, and the publisher does not require an SSD.
The recommended CPU is an Intel Core i5-3570K or an AMD Ryzen 5 2400G. In today's terms that is an older mainstream quad-core class, with the 2400G being an older APU. The recommended GPU is a GeForce GTX 560 Ti with 1GB of VRAM or a Radeon R7 370 with 2GB, which lands around the level of a GeForce GT 1030 today. RAM and storage are the same as the minimum: 4GB and 10GB. The publisher does not list anything above the recommended tier.
For a player, the gap between minimum and recommended mostly comes down to the processor and the graphics card. Stellaris is a simulation-heavy strategy game, and as empires grow the CPU's core count and single-thread speed matter more than the GPU. Use the tiers above as a floor, not a target, if you want a comfortable late game.
Recommended builds for three budgets
The entry build suits players on a tight budget who mainly want the game to run smoothly. A GeForce GTX 1650 4GB or an Intel Arc A380 paired with a Ryzen 3 3100 or Core i3-10100F gives you a clear margin above the official recommended tier. It is good for medium settings over long sessions. Use 16GB of RAM so that late-game saves and large galaxies do not push the system into constant paging.
The mainstream build suits players who want stable performance at most settings while keeping other games in mind. An RTX 3050 8GB or a GTX 1660 Super paired with a Ryzen 5 3600 or Core i5-10400 is a sensible balance. Core count helps with turn processing in the late game, so the CPU is the part worth spending on at this level. Again, 16GB of RAM is recommended.
The high-end build suits players who want high settings and plan to run large empires for a long time, perhaps with mods. An RTX 4060 or Radeon RX 7600 paired with a Ryzen 5 5600X, Core i5-12400 or Ryzen 7 8700G gives plenty of headroom. If the budget allows, 32GB of RAM makes large saves and multitasking more comfortable.
Graphics settings with the biggest impact
In a strategy game driven by unit simulation, the expensive settings are usually not the visual effects but the ones tied to the simulation itself. Unit draw distance, fleet or pop density and physics simulation detail all add load to the processor, and the effect is most visible during large wars or in very big galaxies. If the game starts to feel sluggish, lower these before lowering resolution.
On the graphics side, shadows, volumetric effects and post-processing are usually the costliest. Volumetrics in particular add noticeable rendering work around nebulae and stars, and turning them down rarely affects how you play. Shadow quality can be reduced while keeping basic lighting. Ray tracing is not central to this game, so there is little reason to enable it unless your GPU has spare capacity.
If you need smoother frame pacing, upscaling technologies such as DLSS, FSR or XeSS can help. In general terms they render at a lower internal resolution and reconstruct the image, which usually keeps the picture close to native while easing the GPU. Upscaling does little for a CPU bottleneck, though, so if turn processing slows down, go back to the simulation settings first.
Laptops and handheld PCs
A laptop GPU that shares a name with a desktop card is usually slower in practice. Laptop versions run under tighter power limits and thermal constraints, so sustained performance is typically below the desktop equivalent. If you play on a laptop, check the vendor's power profile, keep vents clear and watch for thermal throttling during long sessions.
Handheld PCs such as the Steam Deck or ROG Ally can run the game to a degree, but the official requirements do not address handhelds specifically. Judge the experience on your own device and adjust settings accordingly. In general, handheld chips have limited power budgets, so lower resolution and simulation density and prioritise smooth turn processing. We have not verified Steam Deck compatibility, so check practical reports or the publisher's information before buying for that purpose.
Storage and memory
The official minimum and recommended RAM is 4GB, but with a modern operating system and background software, 16GB is a more comfortable target for actual play. Large galaxies and many empires, or running other programs at the same time, will show the difference quickly. Dual-channel installation, with RAM sticks in the matching slots, also raises memory bandwidth, which helps processor-heavy strategy games.
Storage is listed at 10GB, but updates, mods and saves grow over time, so leave extra space. An SSD is not required, but installing the game on one noticeably shortens loading and save-loading times, especially with large saves. A hard drive will still work; loads will just take longer.